Process for washing and separating materials.



H. A. MARK. PROCESS FOR WASHING AND SEPARATING MATERIALS.

APPLICATION FILED SEPT. 10, 1917. v 1,269,947. Patented June 18, 1918.

2 SHEETS SHEE|' l- H. A. MARK.

PROCESS FOR WASHING AND SEPARATING MATERIALS.

APPLICATION FILED SEPT.10. I917. 7 1,269,947. Patented June 18, 1918.

2 SHEETS-SHEET 2.

HABTSON' A. MARK, OF OSHKUSH, NEBRAS 21 6-.

PROCESS I'OR 'WASHING AND SEPARATING MATERIALS.

To all whom it may concern:

Be it known thatI, HARTBON A. MARK, a citizen of the United. States, residing at Oshkosh, in the county of Garden and State of Nebraska, useful Improvements in Processes for Washing and Separating Materials, of which the following is a specification.

This invention relates to a washing and screening or separating device and its object is to provide an apparatus by means of which heavier than water solids such as broken stone, gravel, sand or the like may be readily and economically separated into piles of varying sizes and washed where washing isneed Further objects and advantages of the invention will be set forth in the detailed description which now follows:.

In the accompanying drawing: 4

Figure 1 is a plan view of a washing and separating apparatus constructed in accordance with the invention.

Fig. 2 is a side elevation thereof.

Fig. 3 isa longitudinal, vertical section.

Fig. 4 is a fragmentary, longitudinal sec.- tion upon an enlarged scale.

Fig. 5 is a transverse, vertical section upon line 55 of Fig. 4.

Like numerals designate corresponding parts in all of the figures of the drawing.

Referringto the drawing, the numeral 5 designates a flume or trough through which a flow of water is maintained. The material to be Washed or washed and screened or merely screened is initially placed in the trough 5 and is washed by the water from the trough into a trough 6. The trough 6 is spanned by a screen 7 and the material initially lands upon this screen. The finer material passes through the screen 7 while the coarser material is carried along the upper surface of the screen 7 by the action of the water. Such of the material as is too coarse to pass through the screen 7 finally lands upon a deflector 8 of imperforate material and this deflector is provided at its lower end with an oblique upstanding edge 9 bywhich the material is deflected laterally. In practice this deflector may be made of any dimensions either in advance of the edge 9 or beyond the same. The waterpasses from the deflector 8 withconsiderable speed and it is therefore desirable to pros vide a baflie-plate 10 in order to avoid the necessity of providing a screen of great Specification of Letters Patent.

12. The screen 12 have invented certain new and and discharges it into a bin indicated at 13.

'16. The trough 16 Patented June 18, 1918.

Application filed September '10, 191?. Serial in. 190,544.

length at this point. This baffle-plate 10 is supported from the side walls 11 of a chute and this chute is spanned by a screen conducts the material,

The water that it discharged laterally from the deflector 8 passes thrloughv the screen 12 and is directed by a spout l'into a waste trough 15, the latter extending longitudinally beneath the line of troughs and screens.

Such of the material as passes the screen 7 and falls into the 'trough16 is carried by the action of the water into a second trough is spanned by a screen 17 and such of the material as is fine enough to pass through the meshes of the screen 17 enters the space between said screen and the bottom of the trough 16, while such of the material as is too coarse to pass through the screen 17 is carried bythe action of the water along screen 17 and upon a deflector 18. having trough corresponds in conducted by a trough 23 back to the waste trough 15.

Such of the material as passes through screen 17 is carried along the bottom of the trough 16 by the action of the Water and is discharged upon a screen 24:, this screen spanning a trough 25, the latter having at its lower end a deflector 26 corresponding in function to the deflectors 8 and 18. The deflector 26 discharges the material into a trough 27 that is spanned by a screen 28 and carries a baiile-plate 10. The screen 28 discharges the material into a, bin or other suitable receptacle 29 while the waterthat passes through the screen 28 is carried by a trough 30 back into the waste trough 15.

The material that passes through the screen 24; is carried along the bottom of trough 25 and is discharged upon a screen 32 that spans a trough 33- and is discharged from-an inclined screen 3i provided with a bafie-plate 10, that is separated from the screen 32fby an imperforate member 32, into a bin indicated at 35. The water from the trough 88 falls through an upstanding edge 19 by whichthe material is deflected laterally into a 11 and is provided with corresponding in function an opening 36 into the waste trough 15 from which it may be the bottom of said trough or flume, the fall conducted by a lateraltrough 37 into a or pitch of said trough or flume, to give the waste pool or if desired the water may be water the proper speed of flow, the relative pumped from the trough back into the flume sizes and quantities of the material to be 5 to be used over and'over again if the water separated or washed, shall havebeen ad- 60 is scarce or expensive. justed: there will be at all times and places While in the illustrated embodiment of a downward motion or movement of the said the invention I have shown four screens 7, water through the openings of the screen. 17, 24 and 32 it is apparent-that a larger This downward movement, aided by the or smaller number of screens may be emforce acting upon falling bodies will carry 65 ployed without departure from the spirit of through the openings of the screen all parthe invention. ticles not too large to pass through the The sizes of the troughs, the inclination openings of the same and all particles too given the same the mesh of the screen and large to be carried through the meshes or the height of the screens above the bottom openings of said screen will be moved for- 7( of the troughs both at the front and rear wardover the upper surfaces thereof and ends thereof are matters dependent upon the onto the deflector. size and nature of the material treated, the In the washing of material the dirt must respective grade or sizes into which it is deof necessity be of such nature as to be sired to separate the same and the quantity momentarily (at least) suspended in the 7 of water used. water, so it can only be the particles sufli- It will be apparent that many mechanical ciently heavy to sink in the movin water expedients may be resorted to to ad'ust the that will be carried downward. he fine inclination of the several troug s and floating particles will be carried in suspenscreens. As merely illustrative of one form sion in the water, both above and below. the 8 of a device that may be used to this end, I screen, and it is this fact that requires the have shown in the accompanyin drawing discharge upon an inclined screen through jack-screws 38 adapted to be e evated by which the water andfioating particles will hand-nuts 39 acting against cross bars 40. pass while the material caug t upon the" 1 It is to be understood however, that this screen will be discharged by gravity by rolla showing is merely to indicate that the invening or sliding ofi said. inclined screen. tion contemplates. the provision of means It is to-be' understood that the invention is for adjusting the inclination of the several not limited to the precise construction set troughs and not as being in any sense a forth but that it includes within its purview limitation to that particular form of adjustwhatever changes fairly come within the 9 ing means. Furthermore it is to be underspirit of the appended claim.

stood that the invention contemplates the ad- Having described my invention what I justment of the height of the several screens claim is: above the bottoms of the trough in which The herein described method of washing they are located. This may be accomplished and screening materials which. consists in by the proper positioning of the screens to feeding such materials, together with water,

suit the "character of work being done. into a trough spanned by a screen, the water In operation, the material is fed, as bebeing in such quantity as to travel both fore stated, into the flume 5 and is disabove and below the screen and impart a a capacity of the trough or flume, beneath mains above sai char ed upon the screen 7. The water and forward movement to that ortion' of the the finer particles of the material are carmaterial which lies above e screen and riedbelow the screen until the carrying laterally defiectin the material which rescreen and which is screen 7, has been reached, as far as the washed down by the water.

water is concerned; therefore an excess of In testimonywhereof I afiix my signature fluid will flow forward above the surface of in the presence of two witnesses.

said screen, carrying, rolling and washing HARTSON A. MARK. forward the particles of material too large Witnesses: to pass through the openings of the screen. HERBERT J. Cmi'rrs,

When the distance from the said screen to Lnorn R. LAYCOCK. 

